<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card class="box-card">
      <!-- 搜索 添加 -->
      <el-row :gutter="15">
        <el-col :span="7">
          <el-input placeholder="请输入内容" class="input-with-select" v-model="queryInfo.query" clearable
            @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <el-table :data="userList" border stripe>
        <el-table-column label="序号" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽的使用，通过switch绑定状态 -->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" with="180px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id,scope.row)">
            </el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top-start" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[1,2,5,10,20,50]" :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加新用户" :visible.sync="addDialogVisible" width="50%" @closed="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部分页 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @closed="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <!-- 注意：prop要写在el-form-item中 -->
        <el-form-item label="邮箱"  prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userinfo.username}}</p>
        <p>当前的角色：{{userinfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    data() {
      // 校验邮箱规则 注意使用const定义常量，后面才能取到值
      const checkEmail = (rule, value, callback) => {
        let regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if (regEmail.test(value)) {
          return callback()
        }
        callback(new Error('请输入合法的邮箱'))
      }
      // 校验电话号码规则 
      const checkMobile = (rule, value, callback) => {
        let regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
        if (regMobile.test(value)) {
          return callback()
        }
        callback(new Error('请输入正确的手机号'))
      }
      return {
        queryInfo: {
          query: '',
          // 当前页数
          pagenum: 1,
          // 每页显示多少数据
          pagesize: 5
        },
        userList: [],
        total: 0,
        // 控制添加用户对话框的显示与隐藏
        addDialogVisible: false,
        addForm: { //添加用户的数据
          username: '',
          password: '',
          email: '',
          mobile: ''
        },
        addFormRules: { //添加表单的验证规则对象
          username: [{
              required: true,
              message: '请输入用户名',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 10,
              message: '用户名的长度在3~10个字符之间',
              trigger: 'blur'
            }
          ],
          password: [{
              required: true,
              message: '请输入密码',
              trigger: 'blur'
            },
            {
              min: 6,
              max: 12,
              message: '用户名的长度在6~12个字符之间',
              trigger: 'blur'
            }
          ],
          email: [{
              required: true,
              message: '请输入邮箱',
              trigger: 'blur'
            },
            {
              validator: checkEmail,
              trigger: 'blur'
            }
          ],
          mobile: [{
              required: true,
              message: '请输入手机号',
              trigger: 'blur'
            },
            {
              validator: checkMobile,
              trigger: 'blur'
            }
          ]
        },
        // 修改用户对话框的显示与隐藏
        editDialogVisible: false,
        // 保存查询到的用户信息
        editForm: {},
        // 修改表单的验证规则
        editFormRules:{
          email: [{
              required: true,
              message: '请输入邮箱',
              trigger: 'blur'
            },
            {
              validator: checkEmail,
              trigger: 'blur'
            }
          ],
          mobile: [{
              required: true,
              message: '请输入手机号',
              trigger: 'blur'
            },
            {
              validator: checkMobile,
              trigger: 'blur'
            }
          ]
        },
        // 控制分配角色的对框框显示
        setRoleDialogVisible:false,
        // 需要被分配角色的用户信息
        userinfo:{},
        // 所有角色的数据列表
        rolesList:[],
        // 已选中角色的id
        selectRoleId:'',
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      async getUserList() {
        let {
          data: res
        } = await this.$http.get('users', {
          params: this.queryInfo
        })
        if (res.meta.status !== 200) return this.$message.error(res.meta.mesg)
        this.userList = res.data.users //保存数据
        this.total = res.data.total
      },
      // 处理页码大小
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      // 处理当前页改变
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },
      // 监听Swatch状态的改变
      async userStateChange(userinfo) {
        let {
          data: res
        } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if (res.meta.status !== 200) { //请求失败时
          userinfo.mg_state = !userinfo.mg_state //保证页面上的switch不改变
          return this.$message.error(res.meta.mesg)
        }
        this.$message.success('修改状态成功！')
      },
      // 监听对话框的关闭
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      // 点击确定 添加新用户
      addUser() {
        this.$refs.addFormRef.validate(async val => {
          if (!val) return //校验失败
          let {
            data: res
          } = await this.$http.post('users', this.addForm)
          if (res.meta.status != 201) {
            this.$message.error(res.meta.msg)
          }
          this.$message.success(res.meta.msg)
          this.addDialogVisible = false //隐藏对话框
          this.getUserList() //刷新数据列表
        })
      },
      // 展示编辑用户信息的对话框
      async showEditDialog(id, e) {
        // 注意：此处传入的scope.row.id和scope.row即e,e和下方的根据id请求所得的数据几乎一致，但为了数据安全性，建议根据id请求数据并修改
        let {
          data: res
        } = await this.$http.get('users/' + id)
        if (res.meta.status != 200) return this.$message.error(res.meta.msg)
        this.editForm = res.data
        this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭
      editDialogClosed(){
        this.$refs.editFormRef.resetFields();
      },
      // 修改用户信息，预验证并提交
      editUserInfo(){
        this.$refs.editFormRef.validate(async val=>{
          if(val){ //true则校验通过
            let {data:res}=await this.$http.put('users/'+this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})
            if(res.meta.status!=200) return this.$message.error(res.meta.msg)
            // 关闭对话框
            this.editDialogVisible=false
            // 刷新数据列表
            this.getUserList()
            // 提示修改信息
            this.$message.success(res.meta.msg)
          }else{
            return false
          }
        })
      },
      // 根据id删除对应的信息
      async removeUserById(id){
        // 询问是否删除
        let confirmRes=await this.$confirm('永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        })
        // return 捕获报错
        .catch(err=>err)
        /* 若删除，返回字符串 confirm
           若取消，返回字符串 cancel
        */
       if(confirmRes=='confirm'){
         let {data:res}=await this.$http.delete('users/'+id)
         if(res.meta.status!=200) return this.$message.error(res.meta.msg)
         this.$message.success('已删除！')
         this.getUserList()
       }
      },
      //展示分配角色的对话框 
      async setRole(userinfo){
        this.userinfo=userinfo
        // 展示对话框前获取所有角色列表
        let {data:res}=await this.$http.get('roles')
        if(res.meta.status!=200) return this.$message.error(res.meta.msg)
        this.rolesList=res.data
        this.setRoleDialogVisible=true
      },
      // 点击按钮保存角色
      async saveRoleInfo(){
        if(!this.selectRoleId) return this.$message.error('请选择要分配的角色！')
        let {data:res} = await this.$http.put(`users/${this.userinfo.id}/role`,{rid:this.selectRoleId})
        if(res.meta.status!=200) return this.$message.error(res.meta.msg)
        this.$message.success(res.meta.msg)
        this.getUserList()
        this.setRoleDialogVisible=false
      },
      // 监听角色分配对话框关闭，重置select
      setRoleDialogClosed(){
        this.selectRoleId=''
        this.userinfo={}
      }
    },
  }

</script>

<style lang="less" scoped>

</style>
